COMPARE
Today's hottest
Amazon Ebay
deals
SSD
RANKINGS
TEST
YOUR SSD
ADD TO PC
BUILD
SamsungMZ-7PD128BW
KingstonSH103S3/240G
▲ 542,764 ▼

Controller: Samsung 3-core MDX. Flash Memory: Samsung 21nm Toggle Mode MLC. Release date: Q4 2012.

VS
▲ 532,729 ▼

Controller: LSI SandForce SF2281VB1-SDC. NAND Memory: Intel Synchronous 25nm MLC. Release date: Q2 2012.

Effective Speed 
+11%
Real World Speed
Performance profile from 62,337 user samples
Benchmark your SSD here
34,842 User Benchmarks
Best Bench: 110% 62GB free
Worst Bench: 62% 119GB free
Poor: 62% Great: 110%
SPEED RANK: 344th / 1080
27,495 User Benchmarks
Best Bench: 94% 1TB free
Worst Bench: 59% 25GB free (System drive)
Poor: 59% Great: 94%
SPEED RANK: 485th / 1080
Effective Speed
Effective SSD Speed 		89.5 % Faster effective speed.
+11% 		80.6 %
Average Score 
+14%
Read
Avg. Sequential Read Speed 		444 MB/s Faster read speed.
+18% 		375 MB/s
Write
Avg. Sequential Write Speed 		336 MB/s Much faster write speed.
+38% 		243 MB/s
4K Read
Avg. 4K Random Read Speed 		30.5 MB/s 31.2 MB/s +2%
4K Write
Avg. 4K Random Write Speed 		81.6 MB/s 82.3 MB/s +1%
Mixed
Avg. Sequential Mixed IO Speed 		268 MB/s 274 MB/s +2%
4K Mixed
Avg. 4K Random Mixed IO Speed 		35.9 MB/s 40.2 MB/s Faster random mixed IO.
+12%
SusWrite
Avg. Sustained Write Speed 		286 MB/s Much faster sustained write speed.
+56% 		183 MB/s
Peak Score 
+23%
Read
Peak Sequential Read Speed 		497 MB/s Faster peak read speed.
+12% 		442 MB/s
Write
Peak Sequential Write Speed 		445 MB/s Much faster peak write speed.
+58% 		281 MB/s
4K Read
Peak 4K Random Read Speed 		36.3 MB/s 37.8 MB/s +4%
4K Write
Peak 4K Random Write Speed 		113 MB/s +1% 112 MB/s
Mixed
Peak Sequential Mixed IO Speed 		331 MB/s Slightly faster peak mixed IO speed.
+6% 		312 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		44.1 MB/s 49.6 MB/s Faster peak random mixed IO.
+12%
SusWrite
Peak Sequential Sustained Write 60s Average 		440 MB/s Hugely faster peak sustained write speed.
+99% 		221 MB/s
Value & Sentiment 
+52%
Market Share
Based on 77,612,669 SSDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.04 % 0.04 %
Value
Value For Money 		5.17 % 13.2 % Hugely better value.
+155%
User Rating
UBM User Rating 		54 % +2% 53 %
Price
Price (score) 		$150 $70 Much cheaper.
+53%
Nice To Haves 
+5%
Age
Newest 		145 Months +4% 151 Months
DQ Read
Peak 4K-64Thread Read Speed 		376 MB/s Faster peak deep queue read.
+26% 		298 MB/s
DQ Write
Peak 4K-64Thread Write Speed 		330 MB/s Faster peak deep queue write.
+25% 		264 MB/s
AS-SSD Total
AS-SSD Total Score 		1,196 Pts Stronger server IO.
+21% 		985 Pts
DQ Mixed
Peak 4K-64Thread Mixed IO Speed 		155 MB/s 289 MB/s Hugely faster peak deep queue mixed IO.
+86%
ADQ Read
Avg. 4K-64Thread Read Speed 		332 MB/s Faster deep queue read.
+29% 		258 MB/s
ADQ Write
Avg. 4K-64Thread Write Speed 		245 MB/s Faster deep queue write.
+17% 		209 MB/s
ADQ Mixed
Avg. 4K-64Thread Mixed IO Speed 		126 MB/s 223 MB/s Much faster deep queue mixed IO.
+77%
Specifications 
Capacity
Capacity 		128GB 240GB
Conclusion 
Average Bench 89.5%
Average Bench 80.6%

The 128GB 840 Pro is a rock solid performer. On release, nearly a year and a half ago, the Pro smashed several speed records. Today, with sequential read/write speeds of 519/438 MBps, the Pro is still one of the fastest SSDs available. One of the Pro's top competitors is Samsungs own, newer 840 Evo. Looking at a raw synthetic speed comparison of the 128GB Pro and Evo is a little misleading. On the face of it the Pro only has a marginal lead over the Evo. This due to the fact that the Evo can only maintain its burst write speed for transfers of up to 3GB, the size of its SLC cache. The Pro on the other hand can sustain higher throughputs indefinitely. The Pro also utilizes MLC which is rated for far more erase cycles than the TLC used in the Evo. Server IO is often continuous and would quickly exhaust the 3GB cache on the Evo but for typical consumer use the Evo will remain within the SLC cache most of the time. [Feb '14 SSDrivePro]

MORE DETAILS

The HyperX 3K is an updated version of the regular HyperX, the only difference between the two SSDs is the grade of NAND flash. The regular HyperX's NAND flash is rated at 5,000 erase cycles vs 3,000 on the 3K version so broadly speaking the number of erase cycles before drive failure on the newer drive is approximately 40% less than on the original HyperX. The distinction is largely irrelevant for consumer users because even after 10 years neither of the drives are likely to come even close to their maximum number of erase cycles. As expected both HyperX's have very similar performance profiles which can be seen in this direct comparison of the two drives. Although the HyperX SSDs were strong contenders on release they are showing their age now and can no longer compete amongst the newer drives from Samsung and Plextor which are both cheaper and faster. [Jan '14 SSDrivePro]

MORE DETAILS

User Builds 
34,842
27,495
Custom PC Builder (Start a new build) Build your perfect PC: compare component prices, popularity, speed and value for money

CHOOSE A COMPONENT:

CPU GPU SSD HDD RAM MBD
Solid State Drive Rankings (Price vs Performance) November 2024 SSD Rankings

Welcome to our SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]

Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.
How Fast Is Your SSD? (Bench your build) Size up your PC in less than a minute

Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.

UserBenchmark of the month

Gaming Desktop ProGaming

How it works

  • - Download and run UserBenchmark
  • - CPU tests include: integer, floating and string
  • - GPU tests include: six 3D game simulations
  • - Drive tests include: read, write, sustained write and mixed IO
  • - RAM tests include: single/multi core bandwidth and latency
  • - SkillBench (space shooter) tests user input accuracy
  • - Reports are generated and presented on userbenchmark.com
  • - Identify the strongest components in your PC
  • - See speed test results from other users
  • - Compare your components to the current market leaders
  • - Explore your best upgrade options with a virtual PC build
  • - Compare your in-game FPS to other users with your hardware

 Frequently Asked Questions

Storage Devices FAQ
What is sustained sequential write speed?
What’s the difference between SLC, MLC and TLC?
What is 3D XPoint and how fast is it?
What’s the difference between SATA, PCIe and NVMe?
What’s the difference between NAND and V-NAND?
What is sequential write speed?
What is sequential read speed?
What is incompressible data?
What is queue depth?
Solid State Drives
What is the SSD value for money rating?
What is 4K 64 thread write speed?
Can CPU power saving states (C1,C2,C3) impact SSD speed?
What is the effective SSD speed index?
How is the AS SSD write score calculated?
How is the AS SSD read score calculated?
How is the AS SSD total score calculated?
ALL FAQs »

 Best User Rated
Why does UserBenchmark have a bad reputation on reddit?
Marketers operate thousands of reddit accounts. Our benchmarks expose their spiel so they attack our reputation.
Why don’t PC brands endorse UserBenchmark?
Brands make boatloads on flagships like the 4090 and 14900KS. We help users get similar real-world performance for less money.
Why don’t youtubers promote UserBenchmark?
We don't pay youtubers, so they don't praise us. Moreover, our data obstructs youtubers who promote overpriced or inferior products.
Why does UserBenchmark have negative trustpilot reviews?
The 200+ trustpilot reviews are mostly written by virgin marketing accounts. Real users don't give a monkey's about big brands.
Why is UserBenchmark the gold standard for users?
Instead of pursuing brands for sponsorship, we've spent 13 years publishing real-world data for users.
The Best
CPUGPUSSD
Intel Core i5-13600K $210Nvidia RTX 4060 $285WD Black SN850X M.2 2TB $125
Intel Core i5-12600K $154Nvidia RTX 4060-Ti $389WD Black SN850X M.2 1TB $80
Intel Core i5-12400F $111Nvidia RTX 4070 $500Crucial T700 M.2 4TB $320
Today's hottest
Amazon Ebay
deals
If you buy something via a price link, UserBenchmark may earn a commission
Build Test EFps
Can You Run It?
►
YouTube
*NEW*
About  •  User Guide  •  FAQs  •  Email  •  Privacy  •  Developer  •  YouTube Feedback